Microchip HCS320 Manual


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KEELOQ® HCS1XX/2XX/3XX
Encoder Family
The KEELOQ® family of encoders offers a complete range
of products for Remote Control and secure Remote
Keyless Entry (RKE) Applications. The encoders range
from the HCS101, a fixed code encoder designed for
remote control systems to the HCS2XX and HCS3XX
products, which utilize Microchip’s patented KEELOQ
hopping technology. The devices incorporates a small
package outline, low cost and the minimum external
components to make these device suited for unidirectional
remote keyless entry, remote control and access control
systems. The Code Hopping Encoders combine a 32-bit
hopping code generated by a non-linear encryption
algorithm, with a 32-bit serial number and information bits
to create a transmission stream of up to 69 bits. The
length of the transmission eliminates the threat of code
scanning, and the code hopping mechanism makes each
transmission unique, thus rendering code capture and
resend schemes useless.
Security Features:
Up to 2 programmable 32-bit serial numbers
Up to 2 programmable 64-bit encoder keys
Up to 2 programmable 60-bit seed values
Each transmission is unique
Up to 69-bit transmission code length
32-bit hopping code
Encoder keys are read protected
Operating Features:
2.0 – 13.3V operation
Up to six button inputs
15 functions available
Up to four selectable baud rates
Selectable minimum code word completion
Battery low signal transmitted to receiver
Nonvolatile synchronization data
PWM, VPWM, PPM and Manchester modulation
Button queue information transmitted
Dual Encoder functionality
Other Features:
On-chip EEPROM
On-chip tuned oscillator (±10%)
Button inputs have internal pull-down resistors
LED output
PLL control for ASK and FSK
Low external component count
Typical Applications:
Automotive RKE systems
Automotive alarm systems
Automotive immobilizers
Gate and garage door openers
Identity tokens
Burglar alarm systems
Related Application Notes:
AN217 – KEELOQ HCS30X, HCS200 Stand-Alone
Programmer
AN645 – PIC16C57 -Based Code Hopping
Security System
AN661 – Code Hopping Decoder using PIC16C56
AN662 – Code Hopping Decoder using Secure
Learn
AN663 – Simple Code Hopping Decoder
AN665 – Using KEELOQ to Generate Hopping
Passwords
AN672 – PICmicro® Mid-range MCU Code
Hopping Decoder
AN740 – Decoding the HCS101 for Non-Secure
Applications
AN742 – Modular PICmicro Mid-Range Code
Hopping Decoder
AN744 – Modular Mid-Range PICmicro KEELOQ
Decoder in C
TB001 – Secure Learning RKE Systems using
KEELOQ Encoders
TB003 – An Introduction to KEELOQ Code Hopping
TB021 – A Guide to Designing for EuroHomelink
Compatibility
TB042 – Interfacing a KEELOQ Encoder to a PLL
Circuit
TB043 – KEELOQ CRC Verification Routines


Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: HCS320

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